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ASH to IAD: distance & flight time
Nashua (Boire Field) → Washington (Washington Dulles International Airport)
408 mi
657 km · 355 nm
1h 21m
estimated nonstop flight time
Same time
time difference · heading southwest
See live ASH→IAD fares Phone-only fares on this route — call free
Flight time details
408 miles nonstop takes roughly 1h 21m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- ASH — Boire Field · Nashua, United States
- IAD — Washington Dulles International Airport · Washington, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near ASH
- BOS · General Edward Lawrence Logan International Airport39 mi away
- MHT · Manchester-Boston Regional Airport11 mi away
- LWM · Lawrence Municipal Airport20 mi away
- BED · Laurence G Hanscom Field24 mi away
Frequently asked questions
How far is ASH from IAD?
The flight distance from Nashua (ASH) to Washington (IAD) is 408 miles (657 km, 355 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ASH to IAD?
A nonstop flight takes about 1h 21m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the cheapest way to fly from ASH to IAD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ASH–IAD that never appear on search engines, with no booking fees.